Oscar Pistorius
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Oscar Pistorius apologises for killing Reeva Steenkamp

7 April 2014 Last updated at 19:16 BST

An emotional Oscar Pistorius has started his testimony at his murder trial by apologising to the family of his girlfriend Reeva Steenkamp.

In a trembling voice, he said he was "trying to protect" her and said he could not imagine their pain.

Andrew Harding reports.